Range Report: RRA National Match NM A4, Bushnell 3200 10x scope, Burris PEPR mount

[danpass]

RRA A4 upper, stainless, 1/8 twist, Wylde chamber, 20in

RRA 2-stage lower (RRA trigger)

Bushnell 3200 fixed 10x with Mil-dots.

Burris PEPR 1in cantilever mount

Harris S-BRM Bipod Leg Notch Sling Swivel Stud Mount 6" to 9"

Date: 3-6-10 at Trailglades Range, Miami, FL

100 yards












Fired off various rounds but here is all Hornady 55 red box.

NRA SR-1 target
X ring . . . . . . . . . . 1.35 in
10 ring . . . . . . . . . 3.35 in
9 ring . . . . . . . . . . 6.35 in









View thru the scope (again the black diameter is 6.35 in)

[Dist. Expert 26]

Try some heavier ammo. If I'm not mistaken that rifle comes with a 3/4 MOA guarantee.

[newguy]

so its grouping about 2.75

May not be the load your gun likes

[danpass]

In my NM A2 upper I've had great luck with 52SMK screamer rounds (27 grn RL-15) and 77SMK rounds but didn't shoot groups with those today.

The factory Hornady 55 is showing a typical group, same thing I've seen in my A2 upper

[jsharp]

I agree with trying some different ammo. Something heavier probably, or some handloads with Hornady V-Max/A-Max bullets.

If you're shooting for groups I'd ditch the bipod temporarily and use a proper rest and rear bag.

I'm curious if you like the scope where it's mounted? I have the same scope on a Colt HBAR and have it mounted about an inch farther back. Seems like I need to move my head too far forward otherwise.

[pat701]

Attachment 4407

I hope i downloaded this target right. This is mine at 300 yards and iron sights off a sand bag. 5" red dot target. Same rifle as yours. I bought the day after Obama was elected.
55 gran South Korean NATO ammo. My son took the picture, i know it isn't focused well. I don't reload. 60 rounds fired last month, 36 degress out no wind.

[sinister]

So, 300-15X?

Go out and kill bad guys like a champion.

[wahoo95]

Not sure if you reload or not, but try some 75gr Hornady BTHP's and 77gr SMK's over 24gr Varget and see what a drastic improvement you see. I have to tell you to work up to that load, however most will tell you its spot on for their 1/7 or 1/8 barreled rifles.

[kittyhawk]

Mine Loved the Parvi 75 gr match stuff. It would shoot under 1" at 100 all day. I had a Simmons 6.5x20 scope mounted on top of the
A2 carry handle. I used it to shoot coyotes out to 400 yards and steel out to 500 yards.
I kind of miss selling it just for the fact it was SOOO dam accurate.

[zxd9]

I ran some statistics on my RRA 16" 1:8 barrel with different loads.

40gr VMax was the worst
55gr Hornady FMJ got better
60gr VMax still a little better
69gr MatchKing - BEST
77gr MatchKing - Just a little worse than 69gr but much better than 60gr VMax


At least in my case, as the weight increased the groups shrunk and 69gr is the sweet spot for me.